Method for demodulating reference Chirp ultra- wideband system group based on active frequency spectrum compression code

A demodulation method and ultra-wideband technology, applied in the field of communication, can solve the problems of difficulty in miniaturization, short communication distance, poor coexistence, etc., and achieve the effect of reducing the requirements of sampling bandwidth and sampling resolution

Inactive Publication Date: 2009-10-07
刘洛琨
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Problems solved by technology

[0020] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a code reference Chirp ultra-wideband system group demodulation method based on active spectrum compression, which can effectivel

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  • Method for demodulating reference Chirp ultra- wideband system group based on active frequency spectrum compression code
  • Method for demodulating reference Chirp ultra- wideband system group based on active frequency spectrum compression code
  • Method for demodulating reference Chirp ultra- wideband system group based on active frequency spectrum compression code

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[0094] The specific implementation manner of the present invention will be described in detail below in conjunction with the actual situation and FIG. 8 .

[0095] As shown in Figure 8, the present invention can be realized by the following methods in specific implementation:

[0096] The present invention comprises sending and receiving two parts, and sending method is, at first produces the data signal to be modulated, receives data signal (being baseband signal) through the receiving end of receiver, under the control of data control and interface module 2, the data signal to be modulated Sent to the multiplier module 3, complete the orthogonal code spread spectrum of the data to be modulated with the orthogonal code word (such as the WALSH code) that produces in the orthogonal code generator module 4, send into the adder module 6, simultaneously, data control and The interface module 2 forms pilot data according to the transmission rate, and produces different orthogonal c...

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Abstract

The present invention relates to a method for demodulating reference Chirp ultra- wideband system group based on active frequency spectrum compression code which can solve problems of serious ultra-wideband wireless transfers multi-path interference, difficult miniaturisation, poor coexisting performance and low communication distance. The method includes steps as follows: generating a waited-module baseband signal, information bit transmitted in code element period for processing data mould, data by-pass road in code element period and orthogonal code word in reference by-pass processing orthogonal code moulding in data by-pass road and reference by-pass road, processing coalition to the signal in data by-pass and reference by pass with addition, then multiplicating, moulding the multiplicated signal for generating transmitted signal, and transmitting by antennae, processing oblique pulse compressing under condition of gauss white noise, demoulding orthogonal code to the signal, processing multiplication demoulding orthogonal code for the signal compressed by active frequency spectrum with orthogonal code, and processing information judgement to the result. The method is advancedand scientific which can solve efficient communication problem in middle remote distance ultra- wideband system.

Description

1. Technical field [0001] The invention relates to the communication field, in particular to a code reference Chirp ultra-wideband system group demodulation method based on active spectrum compression. 2. Background technology [0002] As a non-traditional and novel wireless transmission technology, UWB (Ultra Wide Band) technology usually uses extremely narrow pulses (pulse widths on the order of nanoseconds to hundreds of picoseconds) or extremely wide spectrum (relative bandwidth greater than 20% or an absolute bandwidth greater than 500MHz) to transmit information. In the 1960s, the ultra-wideband wireless transmission technology in the modern sense appeared in the research of the US military's tactical communication field. In 2002, as the U.S. Federal Communications Commission (FCC, Federal Communications Commission) determined the UWB radiation template, it marked that the U.S. military officially lifted the ban, allowing the UWB civilian communication system to be pu...

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Application Information

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IPC IPC(8): H04B1/69H04J11/00H04B1/7073H04L25/03
Inventor 刘洛琨张剑汪涛李霞康荣宗常力刘仕刚郭虹万磊孔泽华高沈张志远
Owner 刘洛琨
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